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Finding the Fourth Proportional to 71,758.13, 99,052.95 and 53,904.72

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Solution

The fourth proportional to 71,758.13, 99,052.95 and 53,904.72 is: 74,408.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,758.13 : 99,052.95 = 53,904.72 : x
  2. Step 2: Convert to fraction form
    71,758.13/99,052.95 = 53,904.72/x
  3. Step 3: Cross multiply
    71,758.13x = 99,052.95 × 53,904.72
  4. Step 4: Simplify right side
    71,758.13x = 5,339,421,534.92
  5. Step 5: Solve for x
    x = 5,339,421,534.92/71,758.13
  6. Step 6: Final answer
    x = 74,408.60

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.